Köprülü Mehmed Pasha was Grand Vizier of the Ottoman Empire and founding patriarch of the Köprülü political dynasty, a family of viziers, warriors, and statesmen who dominated the administration of the Ottoman Empire during the last half of the 17th century, an era known as the Köprülü era. He helped rebuild the power of the empire by rooting out corruption and reorganizing the Ottoman army. As he introduced these changes, Köprülü also expanded the borders of the empire, defeating the Cossacks, the Hungarians, and most impressively, the Venetians. Köprülü's effectiveness was matched by his reputation.

Abaza Hasan Pasha, also called Kara Hasan Pasha or Celali Hasan Pasha;, was an Ottoman provincial governor and celali rebel of the mid-seventeenth century. He launched two rebellions against the Ottoman government, the second and largest of which ended with his assassination in Aleppo on 16 February 1659 following a failed attempt to force the deposition of the Grand Vizier Köprülü Mehmed Pasha.